The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  2  0  0  0  1  4  4  1  1  1  2  1  0  1  1  4  2  0  1  2  1  1  1  1  0  1  2  2
 0  2  0  0  0  2  6  2  0  0  4  2  4  2  6  2  2  4  0  2  6  2  2  6  0  6  4  4  2  4  2  4  2  0  2  0  2  6  0  0  4  2  4  0  4  6  2  4  2  6  4  6  0  2  6  6  2
 0  0  2  0  2  2  6  0  0  4  2  2  2  6  4  0  0  0  0  2  2  4  4  0  6  2  6  4  2  0  2  2  2  2  6  2  0  4  0  2  6  0  2  4  2  4  4  6  2  6  2  6  6  6  6  2  4
 0  0  0  2  2  0  6  2  4  2  2  0  4  6  0  2  6  2  0  6  4  0  2  4  6  2  0  6  0  2  2  0  2  4  0  6  6  6  4  0  6  4  2  4  2  6  6  0  6  4  0  4  4  0  0  2  6
 0  0  0  0  4  0  0  0  0  0  0  4  4  4  0  4  0  0  0  4  0  4  4  4  4  0  0  0  0  4  4  4  4  4  4  0  0  4  4  4  0  0  0  4  4  0  4  0  4  4  4  0  0  0  0  0  0
 0  0  0  0  0  4  0  4  4  0  4  4  0  4  4  4  0  4  0  0  4  0  0  4  0  4  0  4  0  4  0  0  4  4  0  4  4  4  0  4  4  0  0  4  4  0  4  4  4  4  0  0  0  4  0  0  0
 0  0  0  0  0  0  4  4  0  4  4  4  0  4  4  0  4  4  4  4  4  4  4  0  4  0  4  0  4  4  0  4  0  0  0  4  0  4  4  0  0  0  0  4  0  4  0  0  4  0  4  0  0  4  4  4  0

generates a code of length 57 over Z8 who´s minimum homogenous weight is 49.

Homogenous weight enumerator: w(x)=1x^0+74x^49+146x^50+124x^51+257x^52+142x^53+501x^54+136x^55+691x^56+138x^57+670x^58+118x^59+407x^60+88x^61+216x^62+94x^63+91x^64+58x^65+56x^66+38x^67+22x^68+10x^69+11x^70+2x^71+1x^72+2x^73+1x^76+1x^84

The gray image is a code over GF(2) with n=228, k=12 and d=98.
This code was found by Heurico 1.16 in 92.2 seconds.